KEYS    About TortAI    Fact Sheets    Glossary    ID Thumbnails    DNA Search    Dissection Guides Archips semiferanus << Previous Next >> CAPS Non-target - Adult Archips semiferanus (Walker) (Tortricidae: Tortricinae: Archipini) Common names: oak leafroller Synonyms: flaccidana (Tortrix) Fig. 1: Male Fig. 1: Male Fig. 2: Male Fig. 2: Male Fig. 3: Female Fig. 3: Female Fig. 4: Female Fig. 4: Female Fig. 5: Male genitalia Fig. 5: Male genitalia Fig. 6: Female genitalia Fig. 6: Female genitalia Adult Recognition FWL: 8.5-11.5 mm Forewings are pale golden brown with variable reddish-brown markings. A broad, reddish-brown median fascia is continuous from the costa to the dorum in many individuals. In other individuals the fasciae are a subdued pale golden brown. The hindwings are light brown. Males have a forewing costal fold.  The ventral surface of the female abdomen is covered in dark purplish-gray scales that are used to cover the egg masses. Archips semiferanus adults are most similar to those of Archips negundana, although most A. negundana individuals are lighter with white hindwings, and females exhibit differences in the scales on the ventral surface of the abdomen. The two species are similar enough to be confused in the early literature; Freeman (1958) described their differences and separated them by primary host: A. semiferanus on Quercus and A. negundana on Acer. Larval Morphology Last instar larvae are 16-26 mm in length with a pale-green abdomen. The head is brown to brownish green and ranges from unmarked to heavily marked with black. The prothoracic shield is pale brownish green and markings range from a pair of spots on the anterolateral corners to more extensive dark patterns. Thoracic legs are pale and unmarked. Biology Archips semiferanus completes one generation per year. Adults are present in late June through August. Females lay eggs in masses of 40-50 individual eggs, often in slight depressions on the bark of the host. The egg masses are covered with specialized scales located on the ventral surface of the female abdomen. Eggs overwinter and first instar larvae hatch the following spring. Larvae feed on all types of new growth, including small fruits, and pupation occurs in the final larval feeding site. Host plants The primary host of Archips semiferanus is oak, but it has been recorded from plants in several other families. Chapman and Lienk (1972) note that records on apple are always in the vicinity of oak. Records for boxelder and maple likely refer to Archips negundana. Family Genus/species Common name Aceraceae Acer negundo L. boxelder Aceraceae Acer L. maple Fagaceae Quercus rubra L. red oak Fagaceae Quercus L. oak Hamamelidaceae Hamamelis L. witchhazel Oleaceae Fraxinus pennsylvanica Marsh. green ash Polygonaceae Polygonum L. knotweed Rosaceae Malus sylvestris (L.) Mill. European crab apple Rosaceae Malus Mill. apple Distribution Archips semiferanus is widely distributed in eastern North America and ranges as far west as Colorado. References Chapman, P. J. and S. E. Lienk. 1971. Tortricid fauna of apple in New York (Lepidoptera: Tortricidae); including an account of apple's occurrence in the state, especially as a naturalized plant. Spec. Publ. Geneva, NY: New York State Agricultural Experiment Station. 122 pp. Freeman, T. N. 1958. The Archipinae of North America (Lepidoptera: Tortricidae). The Canadian Entomologist Supplement 7 (Vol. 90): 1-89. Tortricids of Agricultural Importance by Todd M. Gilligan and Marc E. Epstein Interactive Keys developed in Lucid 3.5. Last updated August 2014.